Strictly speaking, with a Challenge like this you're only supposed to roll once each per skill. So I'll take that Fate point for Echo's first roll, but you can keep the others. 24 is a pass, with a degree for assistance from the Rings. Technically you're supposed to have training in a skill to assist, but for basic skills I think I can count it, so we'll give you one more assist from the Praetorians. Neither the Rings nor the Praetorians may assist with anyone else's checks, though. You have accrued 2 degrees of success towards the challenge.
For reference, Exploration skills are Awareness, Search, Security, Survival, Tech-Use, Tracking, and Trade - though that last one I'd need a pretty good reason how it's applicable. There's also Navigation, but that one wouldn't apply here. And before you go off rolling all of them you can, keep in mind that failures make the next test harder and reduce your overall chance of success.